here, in a broad valley in central mexico, stand the ruins of what was once the largest city in the new world. beneath an intricate complex of dwellings, archaeologists are uncovering startling evidence of family life. and in italy, as archaeologists explore the ruins of pompeii, new investigations shed light on the nature of the roman family and the surprising role of slaves. who do we live with and why ? what can these ancient families tell us about our own families ? around the world, archaeologists are looking far beyond the palaces and temples into the households of common people, bringing families to life out of the past. come forward all the way. oooh ! that's it. good. hold on me. come forward. ease the baby out with little pushes. come on. you can do it. beautiful ! the baby's coming up to you. waaahh ! keach: every newborn child immediately confronts three basic needs -- food, shelter and education. in the beginning, these needs are met at home. but in industrial societies, that soon changes. teacher: times three... we educate our children in schools. how would you read this n